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Product Overview

Phosphoric Acid (also orthophosphoric acid, H₃PO₄) is a clear, non-volatile inorganic acid widely used across industry. Available as concentrated 85% phosphoric acid (commonly referred to as phosphoric acid 85 or o-phosphoric acid) and as lower-strength aqueous solutions for cleaning, formulation and agricultural dosing. Our grades cover industrial, food-grade (where permitted) and custom diluted solutions.

Key Properties & Typical Specifications

Melting Point	~40 °C(lit.)
Boiling Point	158 °C(lit.)
Density	1.685 g/mL at 25 °C(lit.)
Vapor Density	3.4 (vs air)
Vapor Pressure	2.2 mm Hg ( 20 °C)
Refractive Index	n20/D 1.433
FEMA	2900 \| PHOSPHORIC ACID
Storage Temp.	No restrictions.
Solubility	H₂O: soluble
PKA	2.1-7.2-12.3(at 25℃)
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